Padlock



Dec. 7, 1937. Q F. MAYER 2,101,264

PADLOCK Filed Deo, 2l, 1935 Patented Dec. 7, 1937 MMM PATENT OFFCE 2,101,264 rADLooK George F. Mayer, Chicago, Ill.

Application December 21, 1935, Serial No. 55,536

5 Claims.

. My invention relates to permutation padlocks and has particular reference to a padlock having the shackle extending through the body of theV lock itself, the shackle serving to hold they sections of the body in operative relation with each other and at the same time being removable therefrom for the purpose of changing the lock combination as may be desired.

Another and further object of my invention is the provision of a permutation padlock which is extremely simple in operation, is adapted for a multitude of uses, and which can be easily and cheaply manufactured.

A further object of my invention is the provision of a padlock which is simple in construction, is extremely strong, cannot easily be picked, and which can be set to almost innumerable com binationsby the owner, if so desired, after the of the operator, withy the tumblers projectingl outof the front and rear sides of the lock casing so that in locking and unlocking the device, even thoughthe operator is being observed, the movement .of the tumblers can be seen from only one side, the tumblers at the rear side of i lock shown in Figure 1;

the lock being moved to their proper positions preferably out oi the View of anyone observing the operations of the` operator. In this manner the position of the tumblers at the rear side of the lock cannot be observed, thereby adding a measure of security 'to my improved lock which is not possible with locks of this type as heretofore manufactured. Y `These and other objects of my invention will vbe more fully and better understood by reference to the accompanying sheet of drawings and in which- Figure 1 is a side elevational View of my improved padlock, the shackle being shown in open position in dotted lines; f

'Figure 2 is an end View of the lock yshown in Figure 1; i

-YFigure 3 is a View of the reverse side of the Figure 4 isa sectional View on line 44 of Figure l; i. 1 Figure 5 is a vertical sectional view on line 5,'--51v of Figure 1;

(Cl. 'I0-25) Figure 6 is a perspective View of one of the tumblers used in the lock; and

Figure '7 isa perspective View of another one of the tumblers used in the lock.

Referring now specifically to the drawing and in which like reference characters refer to like parts throughout, the body of the lock comprises a casing IQ, preferably rectangular in shape and closed at each of its ends and on three of its sides and open at its other side, with a cover I I therefor which is similar in construction and adapted to be fitted over the casing Iii in telescopic arrangement therewith, as shown particularly in Figures 4 and 5 of the drawing. The casing I has a frame member I2 mounted therein, of substantially the'same length as the casing, and

I-shaped in cross section, having an upper flange Y Vportion I3 and a lower flange portion I4, and a web portion I which connects the flange portions I3 and I4.

Mounted in the casing I0 and extending longitudinally thereof between the flanges I3 and I4- and on each side of the web I5is a plurality of spacers I6, I6, three on each side in the form shown, with a pair of spacers I'I, Il being provided which are fitted against the flange I4 on their lower sides and have their edges fitted against the web I5, with recesses I8, I8 provided therein on the lower side thereof. A pair of pins I9, I9 is mounted on each side of the web I5 and extend in a vertical direction through the spacers IIS and the spacers Il, with springs 2E), 20 positioned around the pins I9, I9 in the recesses I8, I8 for the purpose of holding the tumblers against movement of their own weight or against easy movement, but `allowing them to be moved easily between the spacers for proper operation of the lock.

A shackle 2| is provided, the long end 22 of which extends completely through the casing Iii through appropriate openings formed in the upper and lower walls of the casing Iii and through holes formed in the upper and lower walls of the cover II, in register with the openings in the casing I when the casing IIJ and the cover II are in assembled position. The shackle serves to hold the cover II and casing I0 in assembled relation, the long end of the shackle having a screw 24 extending longitudinally into the end thereof, the head of the screw 2t being slightly larger in diameter than the openings in the casing Il) and cover II so the shackle cannot be removed from the casing until the screw 24 is removed from the long end 22 of the shackle 2l. The short end of the shackle 2| extends movement.

through openings formed in the upper sides of the casing I and cover II, and. in normal locked position of the padlock rests uponthe lower wall of the casing I6. Vertical holes are formed in the member I2 through the flanges I3 and I4 and web I5 through which both the long and short ends of the shackle pass, theseV holes being in alignment with the holes formed in the upper and lower walls of the casing III and cover Il. The spacers I6 Vand I'I have semi-circular recesses formed in their sides adjacent the web I5, these recesses being in alignment with the holes in the casing I6, cover II, and member VI2 to allow for the free movement of the shackle 2| A plurality of transversely extending slots 25, 25 are formed in both the long and short ends V`of the shackle, these slots being in spaced vertical relation with each other on the shackle, and in register with each other in horizontal relation on each of the sides of the shackle as shown.

Tumblers 26 and 2l are provided, the tumblers 26 being generally rectangular in shape and having a projection 28 forming a fingerpiece on one side thereof which extends outward through 26 is of the same thickness as the slots 25 formedin the shackle, and is adapted to engage therein when the shackle is in locked position in the padlock.

The tumbler 2 has a ngerpiece 30 thereon and a recess 3| on the opposite side thereof, this recess being semi-circular in form, and as will be noted, is slightly to one side of the ngerpiece 30 instead of being directly opposite the ngerpiece, as is the case with the tumbler 26 illustrated in Figure 6, and in other respects is the same size and form as the tumbler 26. Y

In the form shown, provision is made for four tumblers, such as shown in Figures 6 and 7, to be placed on each side of the frame I2, the upper tumblers being placed between the flange I3 and the upper pair of spacers I6, as shown, with the ngerpieces extending outward and projecting through appropriate slots 32 formed in the sides of the casing I) and cover II. set of tumblers is placed in the lower part of the frame I2 on each side ofthe web I5 between the lowermost pair of spacers I6 and the bottom spacers I'I, with the ngerpieces extending outward and through the slots 32 similarly formed inA the sides of the casing II) and cover I I. These slots 32, in the form shown, are substantially the same length as the diameter of the shackle 2|, although they maybe of various lengths, as may be desired, and may have identifying numbers placed thereon, as shown particularly in Figures 1 and 2, for purposes of giving the purchaser or user of the lock the proper combination when the lock is manufactured or sold.

In placing the tumblers in position, the spacers are moved apart a suicient distance to receive vthe tumblers, and the action of the springs 20V around the pins causes sufcient friction to be maintained on the sides of the tumblers andthe spacers to prevent the tumblers frommoving of their own weight and causes them to be held in proper position against easy or accidental `I prefer in assembling the lock to usebnly one A similar.

or two tumblers of the form shown in Figure 6, although they may be omitted entirely if desired. It will be noted that in the tumblers shown in Figure 7, the recess 3| is in offset relation with respect to the ngerpiece 36, thereby providing what I prefer to call the long and short end of the tumbler, referring to the distance from the ends of the tumbler to the beginning of the recess 3 I. When the tumblers are placed in position in the lock, I place them fin suchfrvmanner that movement in a direction toward the long end of the tumbler serves to bring the recess 3| "into register with the vertically extending holes through the casing and out of engagement with theY shackle 2|, thereby unlocking the shackle 2 I. In placing the tumblers in the lock, therefore, provision may be made, in view of the fact that they are reversible, vfor placing them in the lock Vso that some of the tumblers will be moved in one direction while others are moved in the opposite direction in order to lock and unlock the shackle. If desired, of course, the operator may use lonly one tumbler for purposes Vof locking the shackle in Yposition in the casing or all of the tumblers may be placed in locking position if desired. When using tumblers of the type illustrated in Figurev 6, it is necessary to bring the ngerpiece in direct opposite relation with respect to the center of the shackle 2|, in which position thesetumblers are out of engagement with the recesses in the shackle 2| and the shackle is therefore in unlocked position, while the tumblersniay be moved in either direction for-engagement with the shackle, bringing them into locked position.

In assembling the lock the spacers are placed in the frame at one side thereofand Athe tumblers placed in position. The casing is thereupon slipped over the flanges of the member VI2 so that the fingerpieces project out through theV openings in the side wall ofthe-casing II). The tumblers may thereupon vbe placed between the spacers exactly opposite the first mentioned spacers and the cover II placed in position over the WallsA of the casing I0. The screw 24 is then removed from the long end of the shackle 2| and the shackle placed in position through the casing,

the longend being placed entirely through the shackle in this position is in'unlocked` condition and may be freely moved into and'out of the casing, placed through a hasp for locking pur- :posesfand when it is desired to lock-the device the shackle isplaced into position so that the short end is 'inside of the body of the lock,

whereupon the'tumblers, as many as may bede- Vsiredfare moved manually into locked position,y

thereby holding the shackle in locked-position until the'tumblers are properly Ymanuallyaligned to release the shackle from the lock.

Should the operator desire to change the combination at` any time, it may be done by removing the shackle from the lock, removing the cover II from the casing and changing the position ofthe tumblers, or reversing the position of'the tumblers ofthe type illustrated in Figure 7 for one side ofthe lock; If desired, the casing AI0 .may be removed allowing the operator to have access to lthe tumblers at the opposite side, so that these tumblers may be changed at will, and'the lock assembled inthe 'reverse .order ashereinabove described and the shackle reversedfin pofrs sition. The casing is not held together by means other than the shackle, so that it is easily removed for purposes of changing or altering the combination as may be desired. v

While I have described more or less precisely the details of construction, I do notwish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient Without departing from vthe spirit or scope of my invention.

I claim:

l. A padlock comprising in combination a casing consisting of a pairrof members in telescopic arrangement lwith each other, having registering openings in two of the sides of said casing at one end thereof and at one side only at the opposite end, a frame in said casing, a plurality of sliding tumblers mounted in said frame on each side thereof and a shackle extending through said casing having long and short ends, the said shackle having tumbler slots formed in both the long and short ends thereof.A

2. A padlock comprising in combination a casing consisting of a pair of members in telescopic arrangement with each other, having registering openings in two of the sides of said casing at one end thereof and at one side only at the opposite end, a frame in said casing having upper and lower flanges on each side thereof, a plurality of sliding tumblers mounted in said frame on each side thereof between the flanges of said frame and a shackle extending through said casing, the said shackle having tumbler slots formed in both the long and short legs thereof, the said tumblers being reversibly positioned in said framey wherebyvarious combinations Vmay be formed.

3. A padlock comprising in combination a casing4 consisting of a pair of members in telescopic arrangement with each other, having registering openings intwo of the sides thereof at one end of the casing and registering openings in one side thereof atthe other end of said casing, a shackle having long and short leg portions, the long leg portion extending through said casing, means in said shackle to prevent its removal from said cas-V flanges of said frame member having iingerV pieces extending through the sides of the casing, and spacers in said casing between the tumblers in a vertical direction.

5. A padlock comprising, in combination, a casing, a frame in said casing of I-shape in cross section, a shackle having tumbler receiving slots therein extending through the said casing and the said frame, spacers in the said casing between the flanges of the said frame, and sliding tumblers in said casing having finger pieces extending through the walls of the casing.

GEORGE F. MAYER. 

